Glossary · MWE Terms · E
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TermTypeDefinitionClassificationsUpdated
En PassantnounMWE(chess) a chess pawn that is moved two squares can be captured by an opponent's pawn commanding the square that was passedverified
Enabling ActnounMWEa provision in a law that confers on appropriate officials the power to implement or enforce the lawverified
Enabling ClausenounMWEa provision in a law that confers on appropriate officials the power to implement or enforce the lawverified
Enabling LegislationnounMWElegislation that gives appropriate officials the authority to implement or enforce the lawverified
Enarthrodial JointnounMWEa freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other boneverified
Encapsulation security payloadnounMWEProtocol, which is designed to provide a mix of security services in IPv4 and IPv6. ESP can be used to provide confidentiality, data origin authentication, connectionless integrity, an anti-replay service (a form of partial sequence integrity), and (limited) traffic flow confidentiality. (RFC 4303) Scope Note: The ESP header is inserted after the IP header and before the next layer protocol header (transport mode) or before an encapsulated IP header (tunnel mode).verified
Enchanter's NightshadenounMWEany of several erect perennial rhizomatous herbs of the genus Circaea having white flowers that open at dawnverified
Enclave BoundarynounMWEPoint at which an enclave’s internal network service layer connects to an external network’s service layer, i.e., to another enclave or to a Wide Area Network (WAN).verified
Encounter GroupnounMWEa meeting of people to develop mutual understanding by freely expressing emotionsverified
encrypted connectionnounMWEA connection between a computer and another computer where the traffic between the two systems have been encrypted.verified
Encrypted KeynounMWEA cryptographic key that has been encrypted using an Approved security function with a key encrypting key, a PIN, or a password in order to disguise the value of the underlying plaintext key.verified
Encrypted NetworknounMWEA network on which messages are encrypted (e.g., using DES, AES, or other appropriate algorithms) to prevent reading by unauthorized parties.verified
encrypted tunnelnounMWEA network boundary protection mechanism — in the same class as firewalls, gateways, and routers — that encapsulates and cryptographically secures data packets in transit across an untrusted or shared network, so that the payload is unintelligible to any party outside the tunnel endpoints. In NIST SP 800-53 (SC-7), encrypted tunnels are listed alongside gateways, routers, firewalls, guards, and virtualization systems as forms of managed interface implemented within a security architecture to enforce boundary protection. They are used to transport data securely across non-secure networks such as the Internet, with a common deployment being VPNs where traffic is encrypted in a private network and transmitted across public infrastructure so that the encrypted data remains protected. Operationally, a tunnel transports a packet using encapsulation across a network by wrapping the original packet into a tunnel format and delivering the encapsulated packet using a different protocol, with encryption applied to that payload to ensure confidentiality and integrity end-to-end.verified
Encryption algorithmnounMWESet of mathematically expressed rules for rendering data unintelligible by executing a series of conversions controlled by a key.verified
Encryption CertificatenounMWEA certificate containing a public key that is used to encrypt electronic messages, files, documents, or data transmissions, or to establish or exchange a session key for these same purposes.verified
Encryption keynounMWEA piece of information, in a digitized form, used by an encryption algorithm to convert the plaintext to the ciphertextverified
Encyclical LetternounMWEa letter from the pope sent to all Roman Catholic bishops throughout the worldverified
End Cryptographic UnitnounMWEDevice that (1) performs cryptographic functions, (2) typically is part of a larger system for which the device provides security services, and (3) from the viewpoint of a supporting security infrastructure (e.g., a key management system), is the lowest level of identifiable component with which a management transaction can be conducted.verified
End EventnounMWEAn activity, task, or output that describes or defines the conclusion of a process.verified
End of the WorldnounMWE(New Testament) day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly livesverified
End OrgannounMWEa specialized structure at the peripheral end of some motor or sensory nerve fibersverified
End RunnounMWE(American football) an attempt to advance the ball by running around the end of the lineverified
End usernounMWEThis role is focused on the consumers of a product or the access to and use of information systems and networks within the organization. Any individual who who uses the product should be assigned to this role.verified
End-Item AccountingnounMWEAccounting for all the accountable components of a COMSEC equipment configuration by a single short title.verified
End-point securitynounMWERefers to a methodology of protecting the corporate network when accessed with remote devices, such as laptops, or other wireless and mobile devices. Each device with a remote connection to the network creates a potential entry (or exit) point for security threats.verified
End-to-End EncryptionnounMWECommunications encryption in which data is encrypted when being passed through a network, but routing information remains visible.verified
End-to-end process flownounMWEDocument that details the flow of the processes, considering automated and manual control points, hardware, databases, network protocols, and real-time versus periodic processing characteristics.verified
End-to-end recoverabilitynounMWEThe ability of an institution to recover a business process from initiation, such as customer contact, through process finalization, such as transaction closure.verified
End-to-End SecuritynounMWESafeguarding information in an information system from point of origin to point of destination.verified
Endangered SpeciesnounMWEa species whose numbers are so small that the species is at risk of extinctionverified
Endemic DiseasenounMWEa disease that is constantly present to a greater or lesser degree in people of a certain class or in people living in a particular locationverified
Endemic TyphusnounMWEacute infection caused by rickettsia and transmitted by the bite of an infected fleaverified
Endocrine GlandnounMWEany of the glands of the endocrine system that secrete hormones directly into the bloodstreamverified
Endocrine SystemnounMWEthe system of glands that produce endocrine secretions that help to control bodily metabolic activityverified
Endogenous DepressionnounMWEa state of depression for which there is no apparent precipitating causeverified
Endorsement in BlanknounMWEan endorsement on commercial paper naming no payee and so payable to the bearerverified
Endothelial MyelomanounMWEmalignant tumor in bone marrow (usually in the pelvis or in long bones)verified
Endotracheal TubenounMWEa catheter that is inserted into the trachea through the mouth or nose in order to maintain an open air passage or to deliver oxygen or to permit the suctioning of mucus or to prevent aspiration of the stomach contentsverified
Endowment InsurancenounMWElife insurance for a specified amount which is payable to the insured person at the expiration of a certain period of time or to a designated beneficiary immediately upon the death of the insuredverified
endpoint devicesnounMWEConnected hardware or virtual devices that communicate across a network, such as mobile devices, laptops, desktops, and sensors.verified
Energy of ActivationnounMWEthe energy that an atomic system must acquire before a process (such as an emission or reaction) can occurverified
Enfilade FirenounMWEgunfire directed along the length rather than the breadth of a formationverified
enforcement mechanismnounMWEA control or set of controls — technical, procedural, or architectural — that actively applies a stated policy by allowing, blocking, redirecting, or logging actions so that the policy does not merely exist on paper but produces real operational effect. The distinguishing characteristic is the causal link: an enforcement mechanism translates a rule (an access-control policy, an information-flow policy, a usage policy) into a runtime decision or constraint that subjects and systems cannot simply bypass. In practice the field uses the term across both access control and information-flow contexts: access enforcement mechanisms such as access control lists, access control matrices, and cryptography are employed to control access between users and objects in the information system, while organizations commonly use information flow control policies and enforcement mechanisms to control the flow of information between designated sources and destinations within systems and between interconnected systems. Concrete instantiations span a wide spectrum: enforcement occurs in boundary protection devices such as gateways, routers, guards, encrypted tunnels, and firewalls that employ rule sets orverified
Engagement LetternounMWEThis record contains formal agreements to perform services in exchange for compensation.verified
Engineering SchoolnounMWEa technical school offering instruction in many industrial arts and applied sciencesverified
Engineering SciencenounMWEthe discipline dealing with the art or science of applying scientific knowledge to practical problemsverified
enhanced security requirementsnounMWESecurity requirements that can be implemented in addition to the requirements in NIST Special Publication 800171. The additional security requirements provide the foundation for a defense-in-depth protection strategy that includes three mutually supportive and reinforcing components: (1) penetration-resistant architecture, (2) damage-limiting operations, and (3) cyber resiliency.verified
Enigmatic CanonnounMWEa canon in which the entrances of successive parts were indicated by cryptic symbols and devices (popular in the 15th and 16th centuries)verified
Enigmatical CanonnounMWEa canon in which the entrances of successive parts were indicated by cryptic symbols and devices (popular in the 15th and 16th centuries)verified
Enrollment ManagernounMWEThe management role that is responsible for assigning user identities to management and non-management roles.verified
Enteric-Coated AspirinnounMWEaspirin that is treated to pass through the stomach unaltered and to dissolve in the intestinesverified
Enterprise ArchitecturenounMWEThe description of an enterprise’s entire set of information systems: how they are configured, how they are integrated, how they interface to the external environment at the enterprise’s boundary, how they are operated to support the enterprise mission, and how they contribute to the enterprise’s overall security posture.verified
enterprise risk managementnounMWEThe methods and processes used by an enterprise to manage risks to its mission and to establish the trust necessary for the enterprise to support shared missions. It involves the identification of mission dependencies on enterprise capabilities, the identification and prioritization of risks due to defined threats, the implementation of countermeasures to provide both a static risk posture and an effective dynamic response to active threats; and it assesses enterprise performance against threats and adjusts countermeasures as necessary.verified
Enterprise ServicenounMWEA set of one or more computer applications and middleware systems hosted on computer hardware that provides standard information systems capabilities to end users and hosted mission applications and services.verified